Things had indeed been very slow with us, and I had learned to dread such periods of inaction, for I knew by experience that my companion’s brain was so abnormally active that it was dangerous to leave it without material upon which to work. For years I had gradually weaned him from that drug mania which had threatened once to check his remarkable career. Now I knew that under ordinary conditions he no longer craved for this artificial stimulus, but I was well aware that the fiend was not dead, but sleeping; and I have known that the sleep was a light one and the waking near when in periods of
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